@article{ref1,
title="Sleep we have lost: pre-industrial slumber in the British Isles",
journal="American historical review",
year="2001",
author="Ekirch, A. R.",
volume="106",
number="2",
pages="343-386",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8762",
doi="",
url="http://dx.doi.org/"
}